MULTI-STACK FLUORESCENT INFORMATION CARRIER WITH ELECTROCHROMIC MATERIALS

摘要

The invention relates to an information carrier for scanning information by means of an optical beam having a wavelength. The information carrier comprises at least two information stacks. Each stack comprises a counter electrode ( 13, 17 ), an electrolyte layer ( 12, 16 ) and an information layer ( 11, 15 ). The information layer comprises a fluorescent material and an electrochromic material whose optical properties at the wavelength of the optical beam depend on a potential difference applied between the information layer and the counter electrode.